Examine source code of StudFinder

{
  "manifest_version": 3,
  "name": "StudFinder",
  "version": "1.0.2",
  "description": "Opens StudFinder website in the sidebar to view LEGO set details",
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "declarativeNetRequest"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "strip_frame_headers",
        "enabled": true,
        "path": "dnr_rules.json"
      }
    ]
  },
  "host_permissions": [
    "https://studfinder.app/*",
    "https://*.studfinder.app/*",
    "https://api.studfinder.app/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon_red.svg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "config.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "config.js",
        "content.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://studfinder.app/*",
        "https://*.studfinder.app/*"
      ],
      "js": [
        "config.js",
        "studfinder-inject.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "action": {
    "default_title": "StudFinder",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "19": "icons/icon19.png",
      "38": "icons/icon38.png"
    }
  },
  "sidebar_action": {
    "default_title": "StudFinder",
    "default_panel": "sidepanel.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png"
    },
    "open_at_install": false
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "studfinder-app@studfinder.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  }
}